Johnson Controls VMA 1410 Overview And Engineering Manuallines page 7

VMA1400 Series Overview and Engineering Guidelines Technical Bulletin 7
The VMA quickly adjusts the damper position to new conditions, and
minimizes position hunting and motor runtime. The fast response
stepper actuator on the VMA1410 and 1420 drives the damper from
full open to full closed in 30 seconds. This significantly reduces the
time to commission a VAV box. Response time of the VMA1430 with
an external synchronous actuator is dependent upon the speed of the
actuator used. The VMA incorporates flow feedback to accurately
position the damper. Control performance metrics are recorded and are
available via the Metasys Operator Workstation (OWS) for timely
indication of system problems.
The VMA is configured for most VAV applications. Configuration
Tools (HVAC PRO software), Version 7.00 or later builds the
applications for VMA1410/1420. Version 7.02 or later includes the
VMA1430 as well as the VMA1410/1420.